2. Composition/Information on Ingredients

3. Hazards Identification

Emergency Overview
--------------------------
POISON! DANGER! CORROSIVE. MAY BE FATAL IF SWALLOWED. HARMFUL IF
INHALED. CAUSES BURNS TO ANY AREA OF CONTACT. REACTS WITH WATER, ACIDS AND
OTHER MATERIALS.

Inhalation:
Severe irritant. Effects from inhalation of dust or mist vary from mild
irritation to serious damage of the upper respiratory tract, depending on
severity of exposure. Symptoms may include sneezing, sore throat or runny
nose. Severe pneumonitis may occur.

Ingestion:
Corrosive! Swallowing may cause severe burns of mouth, throat, and stomach.
Severe scarring of tissue and death may result. Symptoms may include
bleeding, vomiting, diarrhea, fall in blood pressure. Damage may appears
days after exposure.

Note to Physician:
Perform endoscopy in all cases of suspected sodium hydroxide ingestion. In
cases of severe esophageal corrosion, the use of therapeutic doses of
steroids should be considered. General supportive measures with continual
monitoring of gas exchange, acid-base balance, electrolytes, and fluid
intake are also required.

5. Fire Fighting Measures

Fire:
Not considered to be a fire hazard. Hot or molten material can react
violently with water.
Can react with certain metals, such as aluminum, to generate flammable
hydrogen gas.

Explosion:
Not considered to be an explosion hazard.

Fire Extinguishing Media:
Use any means suitable for extinguishing surrounding fire. Adding water to
caustic solution generates large amounts of heat.

Special Information:
In the event of a fire, wear full protective clothing and NIOSH-approved
self-contained breathing apparatus with full facepiece operated in the
pressure demand or other positive pressure mode.

6. Accidental Release Measures

Ventilate area of leak or spill. Keep unnecessary and unprotected people
away from area of spill. Wear appropriate personal protective equipment as
specified in Section 8. Spills: Pick up and place in a suitable container
for reclamation or disposal, using a method that does not generate dust.
Do not flush caustic residues to the sewer. Residues from spills can be
diluted with water, neutralized with dilute acid such as acetic,
hydrochloric or sulfuric. Absorb neutralized caustic residue on clay,
vermiculite or other inert substance and package in a suitable container
for disposal.
US Regulations (CERCLA) require reporting spills and releases to soil,
water and air in excess of reportable quantities. The toll free number for
the US Coast Guard National Response Center is (800) 424-8802.

7. Handling and Storage

Keep in a tightly closed container. Protect from physical damage. Store in
a cool, dry, ventilated area away from sources of heat, moisture and
incompatibilities. Always add the caustic to water while stirring; never
the reverse. Containers of this material may be hazardous when empty since
they retain product residues (dust, solids); observe all warnings and
precautions listed for the product. Do not store with aluminum or
magnesium. Do not mix with acids or organic materials.

8. Exposure Controls/Personal Protection

Ventilation System:
A system of local and/or general exhaust is recommended to keep employee
exposures below the Airborne
Exposure Limits. Local exhaust ventilation is generally preferred because
it can control the emissions of the contaminant at its source, preventing
dispersion of it into the general work area. Please refer to the ACGIH
document, Industrial Ventilation, A Manual of Recommended Practices,
most recent edition, for details.

Personal Respirators (NIOSH Approved):
If the exposure limit is exceeded, a half-face dust/mist respirator may be
worn for up to ten times the exposure limit or the maximum use
concentration specified by the appropriate regulatory agency or respirator
supplier, whichever is lowest. A full-face piece dust/mist respirator may
be worn up to 50 times the exposure limit, or the maximum use concentration
specified by the appropriate regulatory agency, or respirator supplier,
whichever is lowest. For emergencies or instances where the exposure
levels are not known, use a full-facepiece positive-pressure, air-supplied
respirator. WARNING: Air-purifying respirators do not protect workers in
oxygen-deficient atmospheres.

12. Ecological Information

Environmental Fate:
No information found.

Environmental Toxicity:
No information found.

13. Disposal Considerations

Whatever cannot be saved for recovery or recycling should be handled as
hazardous waste and sent to a RCRA approved waste facility. Processing, use
or contamination of this product may change the waste management options.
State and local disposal regulations may differ from federal disposal
regulations.
Dispose of container and unused contents in accordance with federal, state
and local requirements.

WHMIS: This MSDS has been prepared according to the hazard criteria of
the Controlled Products Regulations (CPR) and the MSDS contains
all of the information required by the CPR.

16. Other Information

NFPA Ratings:Health: 3 Flammability: 0 Reactivity: 1

Label Hazard Warning:
POISON! DANGER! CORROSIVE. MAY BE FATAL IF SWALLOWED. HARMFUL IF INHALED.
CAUSES BURNS TO ANY AREA OF CONTACT. REACTS WITH WATER, ACIDS AND OTHER
MATERIALS.

Label Precautions:
Do not get in eyes, on skin, or on clothing.
Do not breathe dust.
Keep container closed.
Use only with adequate ventilation.
Wash thoroughly after handling.

Label First Aid:
If swallowed, DO NOT INDUCE VOMITING. Give large quantities of water. Never
give anything by mouth to an unconscious person. In case of contact,
immediately flush eyes or skin with plenty of water for at least 15 minutes
while removing contaminated clothing and shoes. Wash clothing before reuse.
If inhaled, remove to fresh air. If not breathing give artificial
respiration. If breathing is difficult, give oxygen. In all cases get medical
attention immediately.

Product Use:
Laboratory Reagent.

Revision Information:
Pure. New 16 section MSDS format, all sections have been revised.

Disclaimer:
************************************************************************************************
Mallinckrodt Baker, Inc. provides the information contained herein in good
faith but makes no representation as to its comprehensiveness or accuracy. This
document is intended only as a guide to the appropriate precautionary handling
of the material by a properly trained person using this product. Individuals
receiving the information must exercise their independent judgment in
determining its appropriateness for a particular purpose. MALLINCKRODT BAKER,
INC. MAKES NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED,
INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE WITH RESPECT TO THE INFORMATION SET FORTH HEREIN OR THE
PRODUCT TO WHICH THE INFORMATION REFERS. ACCORDINGLY, MALLINCKRODT BAKER, INC.
WILL NOT BE RESPONSIBLE FOR DAMAGES RESULTING FROM USE OF OR RELIANCE UPON THIS
INFORMATION.
************************************************************************************************
Prepared by: Strategic Services Division
Phone Number: (314) 539-1600 (U.S.A.)